Arrhenius Analysis of the Degradation Modes in BackFLIP Study of Emerging Photovoltaic Backsheets: Preprint

Naila Al Hasan, Rachael Arnold, David Miller, Jimmy Newkirk, Emily Rago, Michael Thuis, Bruce King, Laura Schelhas, Archana Sinha, Kent Terwilliger, Sona Ulicna, Peter Pasmans, Christopher Thellen

Research output: Contribution to conferencePaper


With increasingly large-scale deployments of photovoltaic (PV) modules to meet global energy demands, interest in better establishing module lifespans is growing. We report on the performance of co-extruded polyolefin- (PO) based backsheets as environmentally friendly alternatives to fluoropolymer-reinforced polyethylene-terephthalate- (PET)-based backsheets using three hygrometric accelerated test conditions. After completing 4000 cumulative hours of aging, we analyzed data from electrical performance (I-V), surface roughness (gloss), and appearance (L, a*, b* color) characterizations are analyzed to quantify degradation rates, quantify the corresponding activation energy, and cross-correlate between the characteristics examined, thereby providing insights into the relationship between physical characteristics and operating performance.
Original languageAmerican English
Number of pages6
StatePublished - 2022
Event49th IEEE Photovoltaic Specialists Conference (PVSC 49) - Philadelphia, Pennsylvania
Duration: 5 Jun 202210 Jun 2022


Conference49th IEEE Photovoltaic Specialists Conference (PVSC 49)
CityPhiladelphia, Pennsylvania

Bibliographical note

See NREL/CP-5K00-85043 for paper as published in proceedings

NREL Publication Number

  • NREL/CP-5K00-82633


  • BackFLIP
  • backsheet
  • damp heat testing
  • durability
  • DuraMAT
  • IEC TS 62788-7-2
  • PET
  • photovoltaic (PV)
  • polyamide
  • polyolefin
  • UV weathering


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